Italian Premier Matteo Renzi gestures during a press conference at Palazzo Chigi in Rome, Friday. Premier Matteo Renzi has announced his government’s first concrete measures to rout endemic corruption that has tarnished major public works projects to protect Venice from flooding and for the world Expo 2015 in Milan.
The government’s moves came as Venice’s mayor resigned under pressure after reaching a plea agreement for having accepted campaign contributions from a slush fund set up by the consortium overseeing construction of underwater barriers in the Venetian lagoon.

MILAN — Premier Matteo Renzi gave his top anti-corruption official enhanced powers Friday aimed at preventing scandals like the one that forced the resignation earlier in the day of Venice’s mayor.

Mayor Giorgio Orsoni resigned under pressure for his role in a sweeping bribery scandal tainting a major public works project to protect Venice from flooding — just one of a series of corruption scandals in recent weeks that have drawn comparisons with Italy’s “Clean Hands” investigations of the 1990s.

The crescendo of scandals has heaped pressure on Renzi to tackle Italy’s endemic corruption, which deters international investment and erodes public trust in institutions.

The premier, whose party backed Orsoni in his 2010 election, said the Venice mayor had a duty to resign `’once he made a plea agreement, declaring himself guilty.”

Orsoni was among more than 30 people, including other politicians and officials, arrested last week in a wide-ranging probe that alleged the consortium building underwater barriers in the Venetian lagoon had amassed a 25 million-euro ($34 million) slush fund abroad to bribe officials.

The mayor was accused of accepting contributions for his 2010 campaign from the slush fund, although he denies knowing that any of the donations to his campaign were illegal. He was released from house arrest Thursday after accepting a four-month suspended sentence.

The ambitious barrier project, meanwhile, has suffered long delays and is more than four times over its initial cost projection. It is currently expected to be finished by 2016.

Under the government’s new measures, the country’s anti-corruption czar will have the ability to take over parts of public works projects tainted by scandal, like the world’s fair Expo 2015 in Milan swept up in a bribery investigation. Renzi said the move is critical to ensuring new investments are made in Italy, and that routing corruption is a long-term project.

`’Let’s be clear: corruption cannot be fought with new rules, corruption is fought with an educational and civic bet, and with a large investment in the country’s moral conscience,” Renzi said.

Also Friday, a longtime ally of former Prime Minister Silvio Berlusconi who authorities said fled to Lebanon to escape a prison sentence for Mafia association was extradited to Italy under Interpol guard. Marcello Dell’Utri was transferred to a prison in the northern city of Parma.

And another one-time Berlusconi aide, three-time government minister Claudio Scajola, was granted house arrest Friday weeks after being arrested on suspicion of aiding a businessman convicted of Mafia association to flee abroad.